When we make a bet and put our money on the line, we may lose money, time, and even some daily tasks that we neglect, and the first goal remains to make a quick profit with the largest possible amount of money, but I do not know why some people consider bets to be more for fun and a way to spend time than to win money.
Since the chance to lose money 50:50, I think we can say that we should lose money in betting. However, each gambler may have a different result in betting. Some gamblers may often to win the betting, others may be very rarely winning the bet. I think it is normal and each gambler understands this very well. That's why some gamblers don't prioritize winning as their main goals because it is unlikely to be achieved. Some gamblers prefer to enjoy the process, they enjoy the game. They like playing the game that can triggers their adrenaline. If they are lucky, they may get a prize. This is a simple tought that some gamblers believe.
Well, it is a personal assumption, it is an own view. Ever gambler has their own goal, every person has their own purpose. In this matter, we can't blame others with their personal opinion. Sure, in theory it won't be fun if we can't win the game. But in reality, there are some people who have no problem to lose money. Their main purpose is to get entertainment in gambling, they know it is not the best place to earn money regularly.